Dam per- reg u lator



L. GOPLESTON. DAMPER REGULATOR.

(No Model.)

Patented M N. PUIRS. W -"Mm Wahinilon. (L Q PATENT OFFICE.

LANOELOT COPLESTON, OF NYACK, NEW YORK.

DAM PER-REG U LATO R.

SPECIFIGATIbN forming part of Letters Patent No. 423,673, dated March18, 1890. Application filed May 25, 1889. $erial No. 312,064. (Nomodel.)

boilers.

supported in any desirable bearings and oon- I will describe adamper-regulator embodying my improvement, and then point out the novelfeatures-in the claims.

In the accompanying drawings, Figure 1 is an elevation of adamper-regulator embodying my improvement, certain parts being shown insection. Fig. 2 is an enlarged. sectional view of a valve.

Similar letters of reference designate corre-. sponc'ling parts in bothfigures.

A designates a shaft from which motion is imparted to operate a damper.It may be nected with a damper in any approved manner.

B designates a wheel affixed. to the, shaft A. As here represented. ithas a grooved pe= riphery.

O designates a cylinder occupying an upright position. It is fittedwit-h a piston D. This piston has a rod D, which passes out of the capor cover at the upper end of the cylinder. On the piston-rod above thecylinder cap or cover is a projection D This forms a stop, whereby thepiston is prevented from descending beyond a. certain point within thecylinder. The piston-rod is connected. to a chain, band, or strap E,extending over a guide-pulley F, which is shown as having a groovedperiphery, and may be supported in any suitable manner. This chain,band, or strap also passes around the wheel B and serves to impart arotary motion to the wheel B, and consequently to the shaft A. The endof the chain, band, or strap, after passing around the wheel B, hasfastened to it a weight G. This weight will be made somewhat lighterthan the piston D, so that the piston may descend when it has nothingbut the weight G to oppose its descent.

In the lower part of the cylinder G, below will cause the rotation. ofthe wheel B.

the piston D, are a valve I and a weight J. The valve I is shown ashaving a cylindrie body or main portion 2" and a stem 4?. The latterwill preferably have wings, so that it will not prevent the passage ofsteam past it. The stem 2' enters ahole arranged at the center of thebottom cap or head of the cylinder. The valve-seat is at the top of thishole and the cylindric body or main portion a" of the valve is adaptedto rest upon this seat. It will be seen that the weight J is supportedwholly by the valve, and that there is a space between the bottom of theweight and the lower cap or head of the cylinder, so that the steam mayact upon a surface of the weight to resist the closing of the valve.From this space a port or passage 0 extends. In the extremity of thisport or passage a petcock K is fitted. This petcoek may be adjusted toallow steam to escape more or less freely. The lower cap or head of thecylinder is in communication with a steam-boiler, so that steam can flowthrough it. As shown, it has a neck. with which a steampipc may beconnected.

The boiler-pressure is always acting upon the valve I. The exposedsurface of the valve will. bear such relation to the normal pressure andto the weight J that so long as the pressure 'does not deviatematerially the valve will be slightly raised, and will. be sustainedabove the seat. The peteoek is adjusted so as to allow of the escape ofsufficient steam to maintain this condition of things, and so the pistonD will not under ordinary conditions be moved. If the pressure risesmaterially, all the steam will no longer be able to escape through thepeteock, and hence it will raise the piston D. Thereupon the weight GThe damper will then be more or less closed. As soon as the pressure ofsteam is reduced by the adjustment of thedamper, so that all the steamthat enters the cylinder may escape by the petcock, the piston willdescend, the damper will be reversely adjusted in consequence of thedescent of the piston, and the normal condition of thin gs will beestablished.

WVhat I claim asmy invention, and desire to secure by Letters Patent, is

1. In a damper-regu1ator, the combination, with a cylinder constructedto communicate with a boiler, of a piston in the cylinder, at piston-rodextending therefrom, a connection between the piston-rod and a damper, aweight on said connection, a stop limiting the movement of thepiston-connection, a valve seated in the lower cap of the cylinder andso constructed that a pressure of steam bears normally on and pressesthe valve, and a cock to adjust the escape of steam to maintain thevalve normally above its seat, substantially as specified.

2. I11 a damper-regulator, the combination, with a cylinder and a pistonin the cylinder having connection with a damper, of avalve in saidcylinder below the piston, a Weight supported wholly by said valve abovethe lower head of the cylinder, providing a space and having a surfaceupon which entering steam may act to resist the closing of the valve, aport extending from said space, and a cock at the extremity of saidport, whereby a uniform pressure of steam is maintained to keep thevalve normally open, substantially as specified. j

In a damper-regulator, the combination, with a cylinder and a piston inthe cylinder having connection with a damper, of a valve controlling theadmission of steam to said cylinder, a weight supported by the valve tomove in the same vertical line with it and exposed to steam flowingtoward the piston and having a surface upon which steam passing thevalve may act to resist the closing of the valve, a port between thevalve and the weight, and a cock controlling the escape of steam frombetween the valve and weight, substantially as specified.

LANOEL'OT OOPLESTON. Witnesses:

JAMES WALsoN, .TOHN LYON.

It is hereby certified that in Letters Patent No. 423,67 3, grantedMarch 18, 1890, upon the application of Lancelot Oopleston, of Nyack,New York, for an improvement in Damper-Regulators, an error appears inthe printed specification requiring the following correction, viz: Inline 8, page 2, the word presses should read passes and that the saidLetters lment should be read with this correction therein that the samemay conform to the record. of the case in the Patent Office.

Signed, eountersigned, and sealed this 25th day of March, D, 1890.

[SEAL] CYRUS BUSSEY,

Assistant Secretary ofthe Interior.

Gountersi gned.

O. E. MITCHELL,

Commissioner of Patents.

